Furnace-door



(No Model.) Y

L. E. JORDAN.

FURNAGB D008.v No. 887,419.l Patented Aug. '1, 1888.

Vl//lIll/IIA UNITED STATES PATENT OrricE.

LLEVVELLYN E. JORDAN,

OF BUFFALO, NEW YORK.

FURNACE-DOOR.

SPECIFICATION forming part of Letters Patent No. 387,419, dated August'7, 1888.

Application filed November 3, 1857. Serial No. 254,147. (No model.)

.To all whom, it may concern:

Be it known that l, LLEWELLYN E. JORDAN, a citizen of the United States,residing at the city of Buffalo, in the county of Erie and State of blewYork, have invented new and useful Improvements in FurnaceDoors, ofwhich the following is a specification.

This invention relates to that class of furnace-doors which are madehollow and form a water-space through which water is circulated forkeeping the door cool, and which are provided with a lining offire-brick or other refractory material.

The object of my invention is to construct the door in such manner thatthe edges of the refractoryy lining as well as the adjacent porj tionsof the furnace will beprotected from exvcessive heat and prevented fromwarping or other injury.

The invention consists of the improvements which will be hereinafterfully described, and pointed ont in the claims.

In the accompanying drawings, Figure 1 is an elevation of a furnaceprovided with my improved door, part of one of the doors being brokenaway Vto show its interior arrangement. Fig. 2 is a cross-section inline @c x, Fig. 1. Fig. 3 is a horizontal section in line y y, Fig. 1,on an enlarged scale. Fig. 4 is a perspective View of the door. Fig. 5is a central vertical cross-section of the same.

Like letters of reference refer to like parts in the several iigures.

A represents the furnace, B the opening, a the jambs, and b thefore-plate thereof, all of which parts are of ordinary and well-knownconstruction.

O represents the door arranged against the jambs a in front of theopening, and resting when closed with its lower edge upon the foreplateb of the furnace. The door C is raised and lowered by means of a cable,d, which passes over a pulley, d', and is connected at its lower end toa lug or ear, d2, formed centrally on the upper end of the door C.

The door Ois composed of a hollow cast-iron frame, E, which is providedon its inner face with a lining, F, of fire-brick or other refractorymaterial. The frame E consists of an outer wall, g, an inner wall, g',end walls, g2, and a bottom wall, g, connecting the inner and outerbetween the inner and outer walls.

h represents hollow vertical flanges projecting inwardly from the twoend walls and the inner wall, and li a similar flange projectinginwardly from the bottom wall and connecting the two vertical flanges hof the end walls. These hollow flanges 7i h form enlarged waterspaces atthe ends and bottom of the door and communicate with the hollow centralwaterspace g4.

t' represents the water-supply pipe, which is arranged above the doorwith its lower e'nd de pending into the space g4 between the inner andouter walls, gg, the top of the door being left open to permit the pipeto enter the space between the inner and outer Walls, g g.

t" represents the overflow-pipe, which is tapped into an opening formedin the outer wall, g, and extends laterally, with its dis charge endarranged over a suitable receiver or funnel, i". The hollow frame E iskept cool by the circulation of the water through the space g4.

The refractory lining F is secured to the inner wall, g', between thevertical side flanges, h, and the bottom Iiange, h', by dovetail ribsvla, formed on the inner wall, g', adjacenttothe inner edges of theVertical side flanges, h, and a central vertical rib, k', formed on theinner Wall, g', between the two Verticalflanges h and similar dovetailgrooves formed in the brick or lining F, as shown in Fig. 3. The loweredge or bottom of the re-brick or lining F rests upon the bottom iiange,h', and the sides or ends of the brick or lining fit against the inneredge of the vertical flanges h, which are iiush with the outer face ofthe lining. The lining is in this manner protected by the flanges h h',and is prevented from coming in contact with the jambs a of the furnaceand being injured thereby as the door is raised and lowered.

The vertical hollow iianges 7i protect the j ambs a of the furnace fromexcessive heat and prevent them from burning out rapidly, and the bottomflange, h, which rests upon the fore-plate b when the door is closed,serves to protect the fore-plate from warping and burning out. Theflanges h hformacomplete protection to the edges of the lire-brick, and

walls and forming a hollow water-space, gi,r

IOO

by the constant circulation of-the cold water in the hollow frame thelining of lre-brick is kept comparatively eool and prevented fromcrumbling. The flanges h h also serve to strengthen the frame E. Theframe E een be readily enst complete with the hollow flanges h h andribs 7c It', :1nd,with the lining F, forms a strong and durablefurnace-door.

I claim as my invention- 1. In a furnace-door, the combination, with thehollow frame E, having en open top and n closed bottom andformingawnter-spnce, 9^', of hollow vertical end llanges, 7i, and abottom flange, h', projecting inwardly from the ends and bottom of theframe E and forming enlarged weterspeces et the ends and bottom of thecentral water-space, g, :i lining of tirebriek scoured to the inner wallol the frame E between the end Hongos, h7 and bottom ilztnge, 7L', andnl water-pipe, i, entering the waterspnee g" through the open top of theframe E, substantially es set forth.

2. In e fnrnaeedoor, the combination, with the hollow frame E, having enopen top and closed bottom and forming a hollow waterspace, g, of hollowvertical end anges, h, and n hollow bottom Ilenge,h,projeeting inwardlyfrom the ends and bottom of the frame E and forming enlarged waterspecesat the ends and bottom of the frame and continuations of the centralwaterspaee, g4, vertical dovetail ribs 7c 7s', projecting inwardly fromthe inner wall ofthe frame E between the vertical flanges h, and alining of lire-brick, F, having dovetniled grooves and secured to theinner wall of the frame E between the ribs lac', the edges and bottom ofthe lining being protected by the hollow flanges It h', substantially asset forth.

fitness my hund this 28th day ol` October, 1887.

LLEVVELLYN E. JORDAN.

W'itnesses:

JNO. J. BoNNnn, FRED. C. GEYER.

